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  • License MIT

JavaScript SDK for Base44 API

Package Exports

  • @base44/sdk
  • @base44/sdk/dist/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@base44/sdk) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Base44 JavaScript SDK

A modern JavaScript SDK for interacting with the Base44 API. Designed to work with both JavaScript and TypeScript projects.

Installation

npm install @base44/sdk
# or
yarn add @base44/sdk

Usage

Basic Setup

import { createClient } from '@base44/sdk';

// Create a client instance
const base44 = createClient({
  serverUrl: 'https://base44.app', // Optional, defaults to 'https://base44.app'
  appId: 'your-app-id',            // Required
  token: 'your-user-token',        // Optional, for user authentication
  serviceToken: 'your-service-token', // Optional, for service role authentication
  autoInitAuth: true,              // Optional, defaults to true - auto-detects tokens from URL or localStorage
});

Working with Entities

// List all products
const products = await base44.entities.Product.list();

// Filter products by category
const filteredProducts = await base44.entities.Product.filter({
  category: ['electronics', 'computers']
});

// Get a specific product
const product = await base44.entities.Product.get('product-id');

// Create a new product
const newProduct = await base44.entities.Product.create({
  name: 'New Product',
  price: 99.99,
  category: 'electronics'
});

// Update a product
const updatedProduct = await base44.entities.Product.update('product-id', {
  price: 89.99
});

// Delete a product
await base44.entities.Product.delete('product-id');

// Bulk create products
const newProducts = await base44.entities.Product.bulkCreate([
  { name: 'Product 1', price: 19.99 },
  { name: 'Product 2', price: 29.99 }
]);

Service Role Authentication

Service role authentication allows server-side applications to perform operations with elevated privileges. This is useful for administrative tasks, background jobs, and server-to-server communication.

import { createClient } from '@base44/sdk';

// Create a client with service role token
const base44 = createClient({
  appId: 'your-app-id',
  token: 'user-token',              // For user operations
  serviceToken: 'service-token'     // For service role operations
});

// User operations (uses user token)
const userEntities = await base44.entities.User.list();

// Service role operations (uses service token)
const allEntities = await base44.asServiceRole.entities.User.list();

// Service role has access to:
// - base44.asServiceRole.entities
// - base44.asServiceRole.integrations
// - base44.asServiceRole.functions
// Note: Service role does NOT have access to auth module for security

// If no service token is provided, accessing asServiceRole throws an error
const clientWithoutService = createClient({ appId: 'your-app-id' });
try {
  await clientWithoutService.asServiceRole.entities.User.list();
} catch (error) {
  // Error: Service token is required to use asServiceRole
}

Server-Side Usage

For server-side applications, you can create a client from incoming HTTP requests:

import { createClientFromRequest } from '@base44/sdk';

// In your server handler (Express, Next.js, etc.)
app.get('/api/data', async (req, res) => {
  try {
    // Extract client configuration from request headers
    const base44 = createClientFromRequest(req);
    
    // Headers used:
    // - Authorization: Bearer <user-token>
    // - Base44-Service-Authorization: Bearer <service-token>
    // - Base44-App-Id: <app-id>
    // - Base44-Api-Url: <custom-api-url> (optional)
    
    // Use appropriate authentication based on available tokens
    let data;
    if (base44.asServiceRole) {
      // Service token available - use elevated privileges
      data = await base44.asServiceRole.entities.SensitiveData.list();
    } else {
      // Only user token available - use user permissions
      data = await base44.entities.PublicData.list();
    }
    
    res.json(data);
  } catch (error) {
    res.status(500).json({ error: error.message });
  }
});

Working with Integrations

// Send an email using the Core integration
const emailResult = await base44.integrations.Core.SendEmail({
  to: 'user@example.com',
  subject: 'Hello from Base44',
  body: 'This is a test email sent via the Base44 SDK'
});

// Use a custom integration
const result = await base44.integrations.CustomPackage.CustomEndpoint({
  param1: 'value1',
  param2: 'value2'
});

// Upload a file
const fileInput = document.querySelector('input[type="file"]');
const file = fileInput.files[0];
const uploadResult = await base44.integrations.Core.UploadFile({
  file,
  metadata: { type: 'profile-picture' }
});

Authentication

The SDK provides comprehensive authentication capabilities to help you build secure applications.

Creating an Authenticated Client

To create a client with authentication:

import { createClient } from '@base44/sdk';
import { getAccessToken } from '@base44/sdk/utils/auth-utils';

// Create a client with authentication
const base44 = createClient({
  appId: 'your-app-id',
  token: getAccessToken() // Automatically retrieves token from localStorage or URL
});

// Check authentication status
const isAuthenticated = await base44.auth.isAuthenticated();
console.log('Authenticated:', isAuthenticated);

// Get current user information (requires authentication)
if (isAuthenticated) {
  const user = await base44.auth.me();
  console.log('Current user:', user);
}

Login and Logout

import { createClient } from '@base44/sdk';
import { getAccessToken, saveAccessToken, removeAccessToken } from '@base44/sdk/utils/auth-utils';

const base44 = createClient({ appId: 'your-app-id' });

// Redirect to the login page
// This will redirect to: base44.app/login?from_url=http://your-app.com/dashboard&app_id=your-app-id
function handleLogin() {
  base44.auth.login('/dashboard');
}

// Handle successful login (on return from Base44 login)
function handleLoginReturn() {
  const token = getAccessToken();
  if (token) {
    console.log('Successfully logged in with token:', token);
    // The token is automatically saved to localStorage and removed from URL
  }
}

// Logout
function handleLogout() {
  removeAccessToken();
  window.location.href = '/login';
}

Real-World Authentication Example (React)

Here's a complete example of implementing Base44 authentication in a React application:

import React, { createContext, useContext, useEffect, useState } from 'react';
import { Navigate, Outlet, Route, Routes, useLocation } from 'react-router-dom';
import { createClient } from '@base44/sdk';
import { getAccessToken, removeAccessToken } from '@base44/sdk/utils/auth-utils';

// Create AuthContext
const AuthContext = createContext(null);

// Auth Provider Component
function AuthProvider({ children }) {
  const [user, setUser] = useState(null);
  const [loading, setLoading] = useState(true);
  const [client] = useState(() => 
    createClient({ 
      appId: 'your-app-id', 
      token: getAccessToken()
    })
  );

  useEffect(() => {
    async function loadUser() {
      try {
        const isAuth = await client.auth.isAuthenticated();
        if (isAuth) {
          const userData = await client.auth.me();
          setUser(userData);
        }
      } catch (error) {
        console.error('Authentication error:', error);
      } finally {
        setLoading(false);
      }
    }
    
    loadUser();
  }, [client]);

  const login = () => {
    client.auth.login(window.location.pathname);
  };

  const logout = () => {
    removeAccessToken();
    setUser(null);
    window.location.href = '/login';
  };

  return (
    <AuthContext.Provider value={{ user, loading, client, login, logout }}>
      {children}
    </AuthContext.Provider>
  );
}

// Custom hook to use auth context
function useAuth() {
  const context = useContext(AuthContext);
  if (!context) {
    throw new Error('useAuth must be used within an AuthProvider');
  }
  return context;
}

// Protected Route Component
function ProtectedRoute() {
  const { user, loading, login } = useAuth();
  const location = useLocation();

  // Check if we're returning from login with a token in URL
  useEffect(() => {
    const token = getAccessToken(); // This will save token from URL if present
    if (token && !user && !loading) {
      window.location.reload(); // Reload to apply the new token
    }
  }, [location, user, loading]);

  if (loading) {
    return <div>Loading...</div>;
  }

  if (!user) {
    // If not authenticated, redirect to login
    login();
    return <div>Redirecting to login...</div>;
  }

  // If authenticated, render the child routes
  return <Outlet />;
}

// Dashboard Component (protected)
function Dashboard() {
  const { user, client, logout } = useAuth();
  const [todos, setTodos] = useState([]);
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    async function loadTodos() {
      try {
        // Load user-specific data using the SDK
        const items = await client.entities.Todo.filter({ 
          assignee: user.id 
        });
        setTodos(items);
      } catch (error) {
        console.error('Failed to load todos:', error);
      } finally {
        setLoading(false);
      }
    }

    loadTodos();
  }, [client, user]);

  return (
    <div>
      <h1>Welcome, {user.name}!</h1>
      <button onClick={logout}>Logout</button>
      
      <h2>Your Todos</h2>
      {loading ? (
        <div>Loading todos...</div>
      ) : (
        <ul>
          {todos.map(todo => (
            <li key={todo.id}>{todo.title}</li>
          ))}
        </ul>
      )}
    </div>
  );
}

// Login Page
function LoginPage() {
  const { login, user } = useAuth();
  
  if (user) {
    return <Navigate to="/dashboard" />;
  }
  
  return (
    <div>
      <h1>Login Required</h1>
      <button onClick={login}>Login with Base44</button>
    </div>
  );
}

// App Component
function App() {
  return (
    <AuthProvider>
      <Routes>
        <Route path="/login" element={<LoginPage />} />
        <Route element={<ProtectedRoute />}>
          <Route path="/dashboard" element={<Dashboard />} />
          <Route path="/profile" element={<ProfilePage />} />
          {/* Add more protected routes here */}
        </Route>
        <Route path="/" element={<Navigate to="/dashboard" />} />
      </Routes>
    </AuthProvider>
  );
}

TypeScript Support

This SDK includes TypeScript definitions out of the box:

import { createClient, Base44Error } from '@base44/sdk';
import type { Entity, Base44Client, AuthModule } from '@base44/sdk';

// Create a typed client
const base44: Base44Client = createClient({
  appId: 'your-app-id'
});

// Using the entities module with type safety
async function fetchProducts() {
  try {
    const products: Entity[] = await base44.entities.Product.list();
    console.log(products.map(p => p.name));
    
    const product: Entity = await base44.entities.Product.get('product-id');
    console.log(product.name);
  } catch (error) {
    if (error instanceof Base44Error) {
      console.error(`Error ${error.status}: ${error.message}`);
    }
  }
}

// Service role operations with TypeScript
async function adminOperations() {
  const base44 = createClient({
    appId: 'your-app-id',
    serviceToken: 'service-token'
  });

  // TypeScript knows asServiceRole requires a service token
  try {
    const allUsers: Entity[] = await base44.asServiceRole.entities.User.list();
    console.log(`Total users: ${allUsers.length}`);
  } catch (error) {
    if (error instanceof Error) {
      console.error(error.message); // Service token is required to use asServiceRole
    }
  }
}

// Authentication with TypeScript
async function handleAuth(auth: AuthModule) {
  // Check authentication
  const isAuthenticated: boolean = await auth.isAuthenticated();
  
  if (isAuthenticated) {
    // Get user info
    const user: Entity = await auth.me();
    console.log(`Logged in as: ${user.name}, Role: ${user.role}`);
    
    // Update user
    const updatedUser: Entity = await auth.updateMe({
      preferences: { theme: 'dark' }
    });
  } else {
    // Redirect to login
    auth.login('/dashboard');
  }
}

// Execute with proper typing
handleAuth(base44.auth);

Advanced TypeScript Usage

You can define your own entity interfaces for better type safety:

// Define custom entity interfaces
interface User extends Entity {
  name: string;
  email: string;
  role: 'admin' | 'editor' | 'viewer';
  preferences?: {
    theme: 'light' | 'dark';
    notifications: boolean;
  };
}

interface Product extends Entity {
  name: string;
  price: number;
  category: string;
  inStock: boolean;
}

// Use your custom interfaces with the SDK
async function getLoggedInUser(): Promise<User | null> {
  const base44 = createClient({ appId: 'your-app-id' });
  
  try {
    const user = await base44.auth.me() as User;
    return user;
  } catch (error) {
    console.error('Failed to get user:', error);
    return null;
  }
}

// Use with React hooks
function useBase44User() {
  const [user, setUser] = useState<User | null>(null);
  const [loading, setLoading] = useState<boolean>(true);
  
  useEffect(() => {
    const base44 = createClient({ appId: 'your-app-id' });
    
    async function fetchUser() {
      try {
        const userData = await base44.auth.me() as User;
        setUser(userData);
      } catch (error) {
        console.error('Auth error:', error);
      } finally {
        setLoading(false);
      }
    }
    
    fetchUser();
  }, []);
  
  return { user, loading };
}

Error Handling

The SDK provides a custom Base44Error class for error handling:

import { createClient, Base44Error } from '@base44/sdk';

const base44 = createClient({ appId: 'your-app-id' });

try {
  const result = await base44.entities.NonExistentEntity.list();
} catch (error) {
  if (error instanceof Base44Error) {
    console.error(`Status: ${error.status}`);
    console.error(`Message: ${error.message}`);
    console.error(`Code: ${error.code}`);
    console.error(`Data: ${JSON.stringify(error.data)}`);
  } else {
    console.error('Unexpected error:', error);
  }
}

Functions

The SDK supports invoking custom functions:

// Invoke a function without parameters
const result = await base44.functions.myFunction();

// Invoke a function with parameters
const result = await base44.functions.calculateTotal({
  items: ['item1', 'item2'],
  discount: 0.1
});

// Functions are automatically authenticated with the user token
// Service role can also invoke functions
const serviceResult = await base44.asServiceRole.functions.adminFunction();

Testing

The SDK includes comprehensive tests to ensure reliability.

Running Tests

# Run all tests
npm test

# Run unit tests only (no API calls)
npm run test:unit

# Run end-to-end tests (requires API access)
npm run test:e2e

# Run tests with coverage report
npm run test:coverage

Setting Up E2E Tests

E2E tests require access to a Base44 API. To run these tests:

  1. Copy tests/.env.example to tests/.env

  2. Fill in your Base44 API credentials in the .env file:

    BASE44_SERVER_URL=https://base44.app
BASE44_APP_ID=your_app_id_here
BASE44_AUTH_TOKEN=your_auth_token_here

  3. Optionally, set SKIP_E2E_TESTS=true to skip E2E tests.

Writing Your Own Tests

You can use the provided test utilities for writing your own tests:

const { createClient } = require('@base44/sdk');
const { getTestConfig } = require('@base44/sdk/tests/utils/test-config');

describe('My Tests', () => {
  let base44;
  
  beforeAll(() => {
    const config = getTestConfig();
    base44 = createClient({
      serverUrl: config.serverUrl,
      appId: config.appId,
    });
    
    if (config.token) {
      base44.setToken(config.token);
    }
  });
  
  test('My test', async () => {
    const todos = await base44.entities.Todo.filter({}, 10);
    expect(Array.isArray(todos)).toBe(true);
    expect(todos.length).toBeGreaterThan(0);
  });
});

License

MIT